And it is not as if nobody warned against helping the Muslim Brotherhood take power. In fact, everybody who did their homework about Egypt and the islamists warned against this. But our political leaders did not want to listen.

To the contrary, they are now working to achieve the same "progress" in Syria.

"
Not that other religions are exempt, even the christian one, (for they have fornicated together),
"

Yes, some religions are excempt. As Sam Harris famously said: "Show me a Jain suicide bomber, and I eat my book."
Yes, radical Christians could conceivable demand Old Testamentarial law, but I don´t see any fundi Christian group that actually does that. The Muslim Brotherhood, on the other hand, is very clear about Sharia: It is Allah´s law for the world, and it must be imposed thoroughly. And in Egypt, they now got their wish.